Check valve including molded valve seat
US5749394A · kind A · utility
68Cited by
16References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1996 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Oct 9, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7912
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A ball check valve including a housing and a ball element movably positioned in the housing. An insert member is located at an inlet port of the housing, and an elastomeric element is molded directly onto the insert member and is positioned facing toward an outlet port of the housing for engagement with the ball element. A ball seat is ground into the elastomeric element at a precise angle matching a tangential angle of contact with the ball element such that engagement of the ball element with the ball seat forms a seal preventing fluid flow from the outlet port through the inlet port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.